bruner



(No Model.) 3 Sheets-Sheet l.

n A. BRUNER. EXCAVATING AND HOISTING MACHINE.

No. 248,286. -Patented 001'.. 18,1881..

(No Model.) 3 Sheets-Sheet 2.

A. BR'UNER.

EXGAVATING AND HOISTING MACHINE.

No. 248,286. l Patented Oct. 18,1881.

(No Model.)` .3 Sheets-Sheet 3.

ABRUNBR.

` EXGAVATING AND HOISTING MACHINE. No. 248,288. Patented Oct. 18,1881.

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UNITED 'STATES PATENT OFFICE.

AUGUSTUS BRUNER, OF INDIANAPOLIS, INDIANA.

EXCAVATING AND HOISTlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 248,286, dated October 18, 1881.

Application tiled November 13, 1880. (No model.)

To all whom it 'may concern Be it known that LAUGUsTUs BRUNER, of the city of Indianapolis, county of Marion, and State of Indiana, have invented an Improvement in Excavating and Hoisting Machines, of which the following is a specification.

The nature and object of the invention will be fully understood from the following general description and the annexed drawings.

Figure lis a side view of the device; Fig. 2, a top view of the saine Fig. 3, a sectional view on the line l 2 of Fig. 2; Fig. 4, a sectional view on the line 3 -1 of Fig.- 3; Fig. 5, a view of the pitman t l l, Fig. 6, a sectional view of the winding-drum E and its accompanying apparatus 5 and Fig. 7 shows the divided box.

It is intended that this machine shall be used principally in the excavation of sewers. It is therefore so arranged and constructed that the operators can remove earth from the bottom of a sewer-trench from in front and beneath the cross-braces, while the sewer is in course of construction, where an ordinary dredge would not work, and so cut a deep sewer down to the proper depth without in any way interfering with the cross-braces.

The machine is attached to a carriage, (shown by N of Figs.'l and 2.) This carriage is mounted upon wheels, (shown by N and N of said Figs. l and 2,) so that it can be rolled about from place to place at pleasure. Upon the top of this carriage is a circular track, (represented by L of Figs. 1 and 2.) The upper part of themachine is attached to said carriage by a bolt in the middle of said track, so that the wheel L will turn freely on the track L, carrying the upper part of the machine with it. The machinery of the upper part of said device is mounted upon a frame, (represented by M of Figs. l, 2, and 3 of said drawings,) and may be described as follows:

A of Figs. l and 2 is au upright boiler, which may be of any convenient kind.

A of Figs. 1 and 2 represents a steam-engine, fed by said boiler A, and turning the shaft between the wheels A and A, A being the iiy-wheel of the machine.

A'is a plain spur-wheel, engagingthe wheel E, which is also a spur-wheel, and giving motion to the shaft H, upon which is mounted the conical friction-clutch E', the drum E", and the ratchet-wheel E. This spur-wheel E meshes into and engages the spur-wheel K, which is mounted on and actuates the shaft on which is mounted the bevel-wheels Kl and K. This spur-wheel K meshes into and engages the spur-wheel F, which is mounted on the same shaft with the conical clutch F', and the drum F.

L is a plain cylindrical wheel rolling on the circular track L, and is actuated by the bevelwheel L, which is mounted upon the same shaft, and is itself driven by the bevel-wheels K and K. H is mounted, and the boxZ of the shaft on which the drum Fis mounted, are both alike, so I shall only describe the box X. Frotruding from the side of said box, next to the drum E, and cast with and forming a part of The box X', in which the shaft each half of said box, is a tube of metal halved like the box, as shown by X, of sufficient size to accommodate the shaft H, so that while said shaft is free to turn in said tube it will be Asecurely held by said tube. Upon this tubular part X of the box X is cut a screw adapted to the nut X, which said nut works on said screw X', and is itself turned by the lever H, the lower end of which embraces said nut with an eye or band, as shown in Fig. 4. The lever H turns in and is guided by the segmental arc H, which has upon its upper and convex surface a series of notches cut to accommodate a spring-pawl of the lever H, to hold said lever H in any position in which it may be placed by the operator. At the lower side of the nutX there is a hub constructed on the eye or 4band of the lever H. Through` this hub and to the nut X is cut a screw to accommodate a screw on one end of the rod H, so that the rod H", while it is a set-screw to keep the eye of said lever H from slipping on the said nut X, also becomes adownward con tinuaton of the lever H.

l l l is a pitman, consisting of two loops or eyes held together by a rod, oneach end of which is a screw passing entirely through one end and into the eye of each of said loops. The screw on one end of said rod is righthanded, and the screw on the other end lefthanded, so that by turning said rod the length of stroke of said pitman may be easily and quickly adjusted. The rod H passes through IOO of the pawl i.

the eye or loop l" of said pitman, and is secured by a jam-nut on either side of said l".

l' is a six-square lug, placed in the middle of the rod of said pitman to expedite the turning of said rod. Through the loop lof said pitman passes the rod i', which is a continuation Said rod t" is secured in said loop l by ajani-nut on either side of said loop l; t', a pawl on a convenient shaft, i", and working in the ratchet-wheel E'". Upon the said shaft t" is also mounted the band-brake W', which is so arranged that when the pawl i is in the ratchet-wheel E'" it will be loose, offering no obstruction to the motion of the clutch E', but when the pawl il is out of the ratchet-wheel E'" it will fasten on the outside of the clutch E', and retard or entirely prevent its motion, so that when the lever H is moved it moves the nut X, the rod H", the pitman l l' l", the rod i', the pawl t', the shaft fi", and the band-brake W" all at the same time.

The clutch E consists of a cylindrical drum or pulley mounted upon the shaft H'". Inside of this drum or pulley is av conical socket. (Shown in section in Fig. 6.) In this socket is fitted the cone Y, which is firmly secured to the shaft H1".

The pulley E', the windingdrum E, and the ratchet-wheel E'" are all fastened together, and, being loose upon the shaft H'", are free to slip a little endwise upon it, and are slipped endwise by the nut X and the collar X", which works in a square groove cut around the hub ofthe ratchet-wheelE'", as shown in section in Fig. 6.

The clutch F' is in all respects like the clutch E', and, like it, is operated by anut, Z, and a lever, I, moving in a segmental arc, I', and a similar collar working in a groove of the narrow wheel F'", which collar is like the said X" in all respects.

K' and K" are two bevel-gear wheels, working in the bevel-wheel L", which by turning the wheel L' carries the upper part of the device around on the track L. These wheels K' and K" are thrown in and out of gear with the wheel L" by the shifter I and the lever W. This lever W moves in a segmental arc, W', and is held in position by a spring-pawl which falls into convenient notches in the segmental arc W'.

Around the drum E" is wound the cord T', which, passing over the sheaf-wheel V" at the upper end of the boom M'", carries the bucket T. This boom consists of two pieces of timber bound together and stiffened by cross-bars. The lower end of said boom is made so wide as to accommodate the side frames, M, to which it is attached, as shown by M M'" of Fig. 2. From this width the sides gradually converge until at the top they approach one another near enough to accommodate the sheaf-wheel Around the drum F" is wound the cord T", which, being attached to the bucket T, is used as hereinafter described. This bucket is of the form represented by T of Fig. 1, andy is constructed of sheet metal, having a steel cuttingedge at y, a handle at y, a bail att t' t", and latch at t'", all as shown in said Fig. 1.

To use this device the machine is set astride the sewer-ditch, so th at the sheaf-wheel V" will be directly above the center of said ditch. Then the ropes T and T" being attached to the bucket T and the machinery being in motion, one operator takes his stand on the platform N, about midway between the wheels E" and F'. Another operator takes his place in the ditch. The ropes T' and T" being made slack enough, the operator in the ditch draws the bucket in under the cross-braces and turns its cut-tingedge down, holding it like a plow by the handles. The operator on the platform now turns the lever I. This turns the nut Z, which moving forward on its screw forces the parts ofthe clutch F' so close together that they engage, and the drum F" begins to wind up the rope T", which draws the bucket T along the bottom of the ditch like a scraper until it is full of earth and clear from under the cross-braces. The operator on the platform then returns the lever I to the position it occupied when he first began. This disengages the parts of the clutch F', and the drum F" ceases to revolve and wind up the cord T". The operator on the platform now turns the lever H, moving the nut X, and forcing the parts of the clutch E' together, and at the same time causing the band-brake W'" to relax and the pawl t' to fall into the ratchetwheel E'" by means of the rod H", the pitman l t Z", and the rod i', as hereinbefore described.

IOO

At the same time the drum E" begins to move and wind up the rope T'. This raises the bucket T, with itsload ofearth, toward the sheaf-wheel V" at the upper end of the boom M'". When the bucket has been raised high enough the operator on the platform returns the lever H to its first position. This disengages the parts ofthe clutch E' and causes the drum E" to stop moving. At the same time it throws the pawl 'i out of the wheel E' and tightens the brake W'" on the outer cylindrical surface of the clutch E. This brake may be made so tight that it will hold the bucket in any desired position as long as may be necessary, or the brake may be so loosened that the bucket will gradually sink into the sewer. Thus when the bucket is empty it may be let down into the sewer and filled and raised until the sewer is cut down to the proper depth.

For the purpose ot' this application I do not claim the bucket T, northe combination ot' thc lever W, the segmental arc l/V', the shiftingrod W", the wheels K' K", the shaft upon which they are mounted, the wheels L and L", the shaft on which they are mounted, the circular track L, the ropes T' T", the wheel V", the boom M'", and the winding-drum F", because the same are claimed in another applicat-ion now pending in my favor in the United States Patent Office.

IIO

IZO

1. In en excavatngend hoisting machine, the box X', when constructed with the halved tube X"', euch half of seid tube cast in one lpiece with one-half of said box, and construct- 5 ed and used for'the purpose'end in the vWay substantially as set forth.-

2. In an excavating and hoisting machine,

the combination and arrangement of the friction-clutch E', the drum E", the ratchet-wheel 1o E', the collar X", the nut X, the box X', with its halved tube X'", the lever H, the are H',

-this 8th day of November, 1880.

AUGUSTUS BRUN ER. Attest:

FRED WERBE,

M. MoDoNALD.

H. W.BURR.

- SHGE.

No. 248,287. Patented Oot..18,1881. 

